mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-07-07 11:48:30 +00:00
Add tcp syn packet fingerprinting to redbean
This change also fixes bugs in enoprotoopt reporting with setsockopt and getsockopt error returns.
This commit is contained in:
Justine Tunney
parent
866b21a151
commit
4d25f8c3c9
75 changed files with 1551 additions and 115 deletions
137
tool/viz/maxmind.c
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137
tool/viz/maxmind.c
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@ -0,0 +1,137 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/bits.h"
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#include "libc/calls/calls.h"
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#include "libc/log/check.h"
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#include "libc/log/log.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/gc.internal.h"
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#include "libc/stdio/stdio.h"
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#include "net/http/http.h"
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#include "net/http/ip.h"
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#include "third_party/maxmind/maxminddb.h"
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#define PATH(...) \
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(const char *const[]) { \
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__VA_ARGS__, 0 \
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}
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MMDB_s *ipdb, *asdb;
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int PrintIpInfo(const char *ipstr) {
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int error;
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bool uhoh;
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int64_t ip;
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uint16_t cc;
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MMDB_entry_data_s e, f;
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MMDB_lookup_result_s r;
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if ((ip = ParseIp(ipstr, -1)) == -1) {
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fprintf(stderr, "BAD IP: %s\n", ipstr);
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return -1;
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}
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r = MMDB_lookup(ipdb, ip, &error);
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CHECK_EQ(MMDB_SUCCESS, error);
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if (!r.found_entry) {
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fprintf(stderr, "NOT FOUND: %s\n", ipstr);
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return -1;
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}
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printf("%hhu.%hhu.%hhu.%hhu\n", ip >> 24, ip >> 16, ip >> 8, ip);
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if (!MMDB_aget_value(&r.entry, &e, PATH("location", "metro_code"))) {
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printf("%s: %s\n", "metro", GetMetroName(e.uint16));
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("postal", "code"))) {
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printf("%s: %.*s\n", "postal", e.data_size, e.utf8_string);
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("city", "names", "en"))) {
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printf("%s: %.*s\n", "city", e.data_size, e.utf8_string);
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("subdivisions", "0", "iso_code")) &&
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!MMDB_aget_value(&r.entry, &f,
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PATH("subdivisions", "0", "names", "en"))) {
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printf("%s: %.*s (%.*s)\n", "region", e.data_size, e.utf8_string,
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f.data_size, f.utf8_string);
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("country", "iso_code")) &&
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!MMDB_aget_value(&r.entry, &f, PATH("country", "names", "en"))) {
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printf("%s: %.*s (%.*s)\n", "country", e.data_size, e.utf8_string,
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f.data_size, f.utf8_string);
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cc = READ16LE(e.utf8_string);
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} else {
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cc = 0;
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("registered_country", "iso_code")) &&
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!MMDB_aget_value(&r.entry, &f,
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PATH("registered_country", "names", "en"))) {
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uhoh = cc && cc != READ16LE(e.utf8_string);
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printf("%s%s: %.*s (%.*s)%s\n", uhoh ? "\e[1m" : "", "registered",
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e.data_size, e.utf8_string, f.data_size, f.utf8_string,
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uhoh ? "\e[0m" : "");
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}
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if ((!MMDB_aget_value(&r.entry, &e,
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PATH("country", "is_in_european_union")) &&
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e.boolean) ||
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(!MMDB_aget_value(&r.entry, &e,
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PATH("registered_country", "is_in_european_union")) &&
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e.boolean)) {
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printf("%s: %s\n", "is_in_european_union", "true");
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("continent", "code")) &&
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!MMDB_aget_value(&r.entry, &f, PATH("continent", "names", "en"))) {
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printf("%s: %.*s (%.*s)\n", "continent", e.data_size, e.utf8_string,
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f.data_size, f.utf8_string);
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("location", "time_zone"))) {
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printf("%s: %.*s\n", "timezone", e.data_size, e.utf8_string);
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("location", "latitude")) &&
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!MMDB_aget_value(&r.entry, &f, PATH("location", "longitude"))) {
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printf("%s: %g %g\n", "location", e.double_value, f.double_value);
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}
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if (!MMDB_aget_value(&r.entry, &e, PATH("location", "accuracy_radius"))) {
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printf("%s: %dkm\n", "accuracy", e.uint16);
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}
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printf("%s: %s\n", "category", GetIpCategoryName(CategorizeIp(ip)));
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if ((r = MMDB_lookup(asdb, ip, &error)).found_entry &&
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!MMDB_aget_value(&r.entry, &e, PATH("autonomous_system_number")) &&
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!MMDB_aget_value(&r.entry, &f, PATH("autonomous_system_organization"))) {
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printf("%s: AS%u (%.*s)\n", "asn", e.uint32, f.data_size, f.utf8_string);
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}
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return 0;
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}
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int main(int argc, char *argv[]) {
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int i, rc;
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ipdb = gc(calloc(1, sizeof(MMDB_s)));
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CHECK_EQ(MMDB_SUCCESS,
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MMDB_open("/usr/local/share/maxmind/GeoLite2-City.mmdb", 0, ipdb));
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asdb = gc(calloc(1, sizeof(MMDB_s)));
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CHECK_EQ(MMDB_SUCCESS,
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MMDB_open("/usr/local/share/maxmind/GeoLite2-ASN.mmdb", 0, asdb));
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for (rc = 0, i = 1; i < argc; ++i) {
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if (PrintIpInfo(argv[i]) != -1) {
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if (i + 1 < argc) printf("\n");
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} else {
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fprintf(stderr, "NOT FOUND: %s\n", argv[i]);
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rc = 1;
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}
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}
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MMDB_close(asdb);
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MMDB_close(ipdb);
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return rc;
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}
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156
tool/viz/tcp.c
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156
tool/viz/tcp.c
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@ -0,0 +1,156 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/bits/bits.h"
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#include "libc/stdio/stdio.h"
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// clang-format off
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static char ip[] = "\
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\x45\x00\x00\x3c\xc8\xbc\x40\x00\x40\x06\x48\xf6\x7f\x0a\x0a\x7a\
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\x7f\x0a\x0a\x7c\xe2\x24\x1b\x58\xf6\xe9\xf2\x85\x00\x00\x00\x00\
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\xa0\x02\xfa\xf0\x5f\xac\x00\x00\x02\x04\x05\xb4\x04\x02\x08\x0a\
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\x4a\x43\x93\x29\x00\x00\x00\x00\x01\x03\x03\x07";
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static const char *const kTcpOptionNames[] = {
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[0] = "End of Option List",
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[1] = "No-Operation",
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[2] = "Maximum Segment Size",
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[3] = "Window Scale",
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[4] = "SACK Permitted",
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[5] = "SACK",
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[6] = "Echo (obsoleted by option 8)",
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[7] = "Echo Reply (obsoleted by option 8)",
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[8] = "Timestamps",
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[9] = "Partial Order Connection Permitted (obsolete)",
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[10] = "Partial Order Service Profile (obsolete)",
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[11] = "CC (obsolete)",
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[12] = "CC.NEW (obsolete)",
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[13] = "CC.ECHO (obsolete)",
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[14] = "TCP Alternate Checksum Request (obsolete)",
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[15] = "TCP Alternate Checksum Data (obsolete)",
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[16] = "Skeeter",
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[17] = "Bubba",
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[18] = "Trailer Checksum Option",
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[19] = "MD5 Signature Option (obsoleted by option 29)",
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[20] = "SCPS Capabilities",
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[21] = "Selective Negative Acknowledgements",
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[22] = "Record Boundaries",
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[23] = "Corruption experienced",
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[24] = "SNAP",
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[25] = "Unassigned (released 2000-12-18)",
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[26] = "TCP Compression Filter",
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[27] = "Quick-Start Response",
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[28] = "User Timeout Option",
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[29] = "TCP Authentication Option (TCP-AO)",
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[30] = "Multipath TCP (MPTCP)",
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[31] = "Reserved (known unauthorized use without proper IANA assignm",
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[32] = "Reserved (known unauthorized use without proper IANA assignm",
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[33] = "Reserved (known unauthorized use without proper IANA assignm",
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[34] = "variable TCP Fast Open Cookie",
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[35] = "Reserved",
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[69] = "Encryption Negotiation",
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[253] = "RFC3692-1",
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[254] = "RFC3692-2",
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};
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int main(int argc, char *argv[]) {
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int version = (ip[0] & 0b11110000) >> 4;
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int ihl = (ip[0] & 0b00001111) >> 0;
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int dscp = (ip[1] & 0b11111100) >> 2;
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int ecn = (ip[1] & 0b00000011) >> 0;
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int lengthtotal = READ16BE(ip + 2);
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int identification = READ16BE(ip + 4);
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int flags = (ip[6] & 0b11100000) >> 5;
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int fragmentoffset = (ip[6] & 0b00011111) << 8 | (ip[7] & 255);
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int ttl = ip[8] & 255;
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int protocol = ip[9] & 255;
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int ipchecksum = (ip[10] & 255) << 8 | (ip[11] & 255);
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int srcip = READ32BE(ip + 12);
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int dstip = READ32BE(ip + 16);
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printf("\n");
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printf("// version = %u\n", version);
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printf("// ihl = %u\n", ihl * 4);
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printf("// dscp = %u\n", dscp);
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printf("// ecn = %u\n", ecn);
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printf("// lengthtotal = %u\n", lengthtotal);
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printf("// identification = %u\n", identification);
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printf("// flags = %u\n", flags);
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printf("// fragmentoffset = %u\n", fragmentoffset);
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printf("// ttl = %u\n", ttl);
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printf("// protocol = %u\n", protocol);
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printf("// ipchecksum = %u\n", ipchecksum);
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printf("// srcip = %hhu.%hhu.%hhu.%hhu\n", srcip >> 24, srcip >> 16, srcip >> 8, srcip);
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printf("// dstip = %hhu.%hhu.%hhu.%hhu\n", dstip >> 24, dstip >> 16, dstip >> 8, dstip);
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printf("// \n");
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char *tcp = ip + ihl * 4;
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int srcport = READ16BE(tcp + 0);
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int dstport = READ16BE(tcp + 2);
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int sequence = READ32BE(tcp + 4);
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int acknumber = READ32BE(tcp + 8);
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int dataoffset = (tcp[12] & 0b11110000) >> 4;
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bool ns = !!(tcp[12] & 0b00000001);
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bool cwr = !!(tcp[13] & 0b10000000);
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bool ece = !!(tcp[13] & 0b01000000);
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bool urg = !!(tcp[13] & 0b00100000);
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bool ack = !!(tcp[13] & 0b00010000);
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bool psh = !!(tcp[13] & 0b00001000);
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bool rst = !!(tcp[13] & 0b00000100);
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bool syn = !!(tcp[13] & 0b00000010);
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bool fin = !!(tcp[13] & 0b00000001);
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int wsize = READ16BE(tcp + 14);
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int tcpchecksum = READ16BE(tcp + 16);
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int urgpointer = READ16BE(tcp + 18);
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printf("// srcport = %u\n", srcport);
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printf("// dstport = %u\n", dstport);
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printf("// sequence = %u\n", sequence);
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printf("// acknumber = %u\n", acknumber);
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printf("// dataoffset = %u\n", dataoffset);
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printf("// ns = %u\n", ns);
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printf("// cwr = %u\n", cwr);
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printf("// ece = %u\n", ece);
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printf("// urg = %u\n", urg);
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printf("// ack = %u\n", ack);
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printf("// psh = %u\n", psh);
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printf("// rst = %u\n", rst);
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printf("// syn = %u\n", syn);
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printf("// fin = %u\n", fin);
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printf("// wsize = %u\n", wsize);
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printf("// tcpchecksum = %u\n", tcpchecksum);
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printf("// urgpointer = %u\n", urgpointer);
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printf("// \n");
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int c, i, j, n;
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for (i = 20; i + 1 < dataoffset * 4;) {
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printf("// option");
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switch ((c = tcp[i] & 255)) {
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case 0:
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case 1:
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printf(" %u", c);
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++i;
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break;
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default:
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n = tcp[i + 1] & 255;
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printf(" %u %u", c, n);
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for (j = 2; j < n; ++j) {
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printf(" %u", tcp[i + j] & 255);
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}
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i += n;
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break;
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}
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if (kTcpOptionNames[c]) {
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printf(" (%s)", kTcpOptionNames[c]);
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}
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printf("\n");
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}
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return 0;
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}
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@ -50,8 +50,9 @@ TOOL_VIZ_DIRECTDEPS = \
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THIRD_PARTY_DLMALLOC \
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THIRD_PARTY_GDTOA \
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THIRD_PARTY_GETOPT \
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THIRD_PARTY_STB \
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THIRD_PARTY_MAXMIND \
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THIRD_PARTY_MUSL \
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THIRD_PARTY_STB \
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THIRD_PARTY_XED \
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THIRD_PARTY_ZLIB \
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TOOL_DECODE_LIB \
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